CVE-2024-58340

LangChain

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

PT-2026-2319

Name of the Vulnerable Software and Affected Versions LangChain versions up to and including 0.3.1 Description LangChain versions up to and including 0.3.1 have a regular expression denial-of-service ReDoS issue in the MRKLOutputParser.parse method, located in...

LangChain 安全漏洞

LangChain is the LangChain open source framework for developing applications powered by the Large Language Model LLM. A security vulnerability exists in LangChain 0.3.1 and earlier versions, which stems from the MRKLOutputParser.parse method using a regular expression that is vulnerable to...

Improper Validation of Specified Type of Input

Overview @n8n/n8n-nodes-langchain is a Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input that is passed to the handleFormData function. An attacker can gain unauthorized access to files on the underlying server by requests with unexpected...

CVE-2024-2057

A vulnerability was found in LangChain langchaincommunity 0.0.26. It has been classified as critical. Affected is the function loadlocal in the library libs/community/langchaincommunity/retrievers/tfidf.py of the component TFIDFRetriever. The manipulation leads to server-side request forgery. It ...

SQL Injection

Overview langchain-cloudflare is a Langchain Integrations for Cloudflare's WorkersAI and Vectorize Affected versions of this package are vulnerable to SQL Injection due to improper sanitization of nested metadata in D1 database operations. The d1upserttexts and ad1upserttexts methods construct SQ...

Exploit for CVE-2025-68664

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Critical LangChain Core Vulnerability Exposes Secrets via Serialization Injection

A critical security flaw has been disclosed in LangChain Core that could be exploited by an attacker to steal sensitive secrets and even influence large language model LLM responses through prompt injection. LangChain Core i.e., langchain-core is a core Python package that's part of the LangChain...

CVE-2025-68664

A flaw was found in LangChain, a framework for building agents and LLM-powered applications. A remote attacker can exploit a serialization injection vulnerability in LangChain's dumps and dumpd functions. This occurs because the functions do not properly escape dictionaries containing the interna...

CVE-2025-68665

A flaw was found in LangChain. A remote attacker could exploit a serialization injection vulnerability in the toJSON method. This occurs because the method fails to properly escape objects containing 'lc' keys during serialization of free-form data. When user-controlled data includes this key...

Deserialization of Untrusted Data

Overview @langchain/core is a Core LangChain.js abstractions and schemas Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the toJSON function, which fails to properly escape user-controlled objects containing the lc key during serialization. An attacker ca...

0pflow (>=0.1.0-dev.0de2bc6 <=0.1.0-dev.f5622ac), @0xgasless/agent-sdk (>=0.1.1 <=0.1.2) +1359 more potentially affected by CVE-2025-68665 via @langchain/core (>=1.0.1 <=1.1.8-dev-1766775128110)

@langchain/core NPM version =1.0.1, =0.1.0-dev.0de2bc6, =0.1.1, =1.0.0, =0.1.0, =2.0.0, =0.0.1, =1.0.0, =0.0.1, =0.0.1, =1.0.0, =1.0.0, =1.51.1 and more Source cves: CVE-2025-68665 Source advisory: SNYK:JS-LANGCHAINCORE-14563113...

@acabai/android (>=1.0.0 <=2.0.6), @acabai/core (>=1.0.0 <=1.0.6) +926 more potentially affected by CVE-2025-68665 via @langchain/core (>=0.0.0 <=0.3.8)

@langchain/core NPM version =0.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =0.0.1, =0.0.6, =1.0.5, =0.1.2, =0.0.1, =1.2.27, =0.1.7, =3.0.0-beta.65.0, =8.0.0, =10.0.0, =11.0.0 and more Source cves: CVE-2025-68665 Source advisory: SNYK:JS-LANGCHAINCORE-14563113...

CVE-2025-68665

LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using...

CVE-2025-68664

LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vulnerability exists in LangChain's dumps and dumpd functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries...

accessiqlue (=2025.12.21154255), agent-builder (>=0.0.2 <=0.1.7) +346 more potentially affected by CVE-2025-68664 via langchain-core (>=0.4.0.dev0 <=1.2.4)

langchain-core PYPI version =0.4.0.dev0, =0.0.2, =0.1.0, =0.1.0, =0.1.1 - ai-benchmark-analyzer =2025.12.21193050 - ai-claim-essence =2025.12.20202921 - ai-design-insights =2025.12.21145447 - ai-mysql-translator =2025.12.21101721 - ai-reliability-analyzer =2025.12.21171415 - ai-risk-extractor...

a-data-processing (=0.0.1), a-mailx (=0.1.0) +1224 more potentially affected by CVE-2025-68664 via langchain-core (>=0.0.1 <=0.3.8)

langchain-core PYPI version =0.0.1, =0.1.0, =0.1.3, =0.1.0b0, =4.8.2, =0.1.3, =0.1.0, =3.2.0, =2.1.7, =0.0.2, =0.0.5 and more Source cves: CVE-2025-68664 Source advisory: SNYK:PYTHON-LANGCHAINCORE-14560681...

Deserialization of Untrusted Data

Overview langchain-core is a Building applications with LLMs through composability Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the dumps and dumpd functions when user-controlled data containing the lc key is serialized and later deserialized. This key...